Yeah, but you have watched enough baseball to know that the old cliche about pitching is only a half truth. You need to hit too if you want to win, consistently, month after month. Also, they're 12th in the league in ERA, so while their pitching has been good, it hasn't been exceptional. This 22-13 start, while impressive, has been built somewhat significantly on good fortune. And that's why your last part is the most important. Hopefully when the regulars come back they can start winning because they're simply better than the team across from them, rather for other, less impressive reasons.
Also, vintage Mo in terms of results, not vintage Mo in terms of production. Way too many hard hit balls this year, with last night as a prime example. I bring this up just to point out that if the process continues unchanged, Mo is going to start blowing some saves, and they're going to start losing some close games.